DD 16 announced that she and her friend (also 16 but looks much younger) have bought tickets for a gig in Oxford. We live in West Sussex and DD not even sure where Oxford is but convinced they can get there and back on train (2 changes) with no problems. Concert venue is 1.5 miles from Ox station. DD not streetwise (has grown up in quiet country town) and only ever been to one gig before - with me! Am concerned about the complicated travel arrangements to an unfamiliar city on a Saturday night and even more worried about the journey home - changing trains in cities late at night. What would you do?